Drilldown: Techtypes

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Techtypes > Keywords : frame or lift or propulsion

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simple tech terms (22) · LTA (5) · USPC 244 (4) · USPC 244/62 (4) · USPC 244/12.1 (3) · CPC B64D (3) · CA 244/3 (3) · GB 4 (3) · Swiss patent classifications, 1908-1920 (3) · dirigible (3)
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None (76) · CPC B64D35/06 (2)
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